CIP Security session error: 0x0911 Insufficient Security

Possible cause and solution:
  • Communication was not established because the connection is attempting to use an encryption method that is not sufficient for the security model.
    Verify that the correct device is addressed and that the project configuration includes devices supported by the CIP Security Policy. Please review logs, network setup, and communications data for unusual activity. If this error persists, contact the security administrator or technical support.
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